360 citations · 1.2k across the 17 of their papers we have counts for
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Comment on "Quantum and Classical Glass Transitions in LiHoYF" by C. Ancona-Torres, D.M. Silevitch, G. Aeppli, and T. F. Rosenbaum, Phys. Rev. Lett. 101, 057201 (2008)
P. E. Jönsson, R. Mathieu, W. Wernsdorfer +2
We show in this comment that the claim by Ancona-Torres et al. of an equilibrium quantum or classical phase transition in the LiHoYF system is not supported by a ri…
Absence of Conventional Spin-Glass Transition in the Ising Dipolar System LiHo_xY_{1-x}F_4
P. E. Jönsson, R. Mathieu, W. Wernsdorfer +2
The magnetic properties of single crystals of LiHo_xY_{1-x}F_4 with x=16.5% and x=4.5% were recorded down to 35 mK using a micro-SQUID magnetometer. While this system is considered…
Aging and Memory Effects in Superparamagnets and Superspin Glasses
M. Sasaki, P. E. Jönsson, H. Takayama +1
Many dense magnetic nanoparticle systems exhibit slow dynamics which is qualitatively indistinguishable from that observed in atomic spin glasses and its origin is attributed to di…
Comment on "Memory Effects in an Interacting Magnetic Nanoparticle System"
M. Sasaki, P. E. Jönsson, H. Takayama +1
In Phys. Rev. Lett. 91 167206 (2003), Sun et al. study memory effects in an interacting nanoparticle system with specific temperature and field protocols. The authors claim that th…
Reply to the Comment on `Symmetrical Temperature-Chaos effect with Positive and Negative Temperature Shifts in a Spin Glass'
P. E. Jönsson, H. Yoshino, P. Nordblad
Reply to the Comment by L. Berthier and J.-P. Bouchaud, Phys. Rev. Lett. 90, 059701 (2003), also cond-mat/0209165, on our paper Phys. Rev. Lett. 89, 097201 (2002), also cond-mat/02…
Symmetrical Temperature-Chaos Effect with Positive and Negative Temperature Shifts in a Spin Glass
P. E. Jönsson, H. Yoshino, P. Nordblad
The aging in a Heisenberg-like spin glass Ag(11 at% Mn) is investigated by measurements of the zero field cooled magnetic relaxation at a constant temperature after small temperatu…
Domain growth by isothermal aging in 3d Ising and Heisenberg spin glasses
P. E. Jönsson, H. Yoshino, P. Nordblad +2
Non-equilibrium dynamics of three dimensional model spin glasses - the Ising system FeMnTiO and the Heisenberg like system Ag(11 at% Mn) - has been investigat…
Non-equilibrium dynamics in a 3d spin-glass
T. Jonsson, K. Jonason, P. Jonsson +1
Non-equilibrium dynamics in a Ag(11%Mn) spin-glass has been studied by low frequency ac-susceptibility and magnetic relaxation experiments. The results unequivocally show that spin…